A three-in-one green oil plugging process

Abstract

The invention discloses a three-in-one green oil plugging process. The plugging process is as follows: green oil pretreatment, printing oil and one-time plugging, pre-baking, exposure, development, final curing and surface treatment. And the one-time plug hole includes double-sided cover oil hole and Top⊥ surface test hole. After the substrate is opened, hole copper is placed in the hole. The green oil pretreatment covers the green oil on the surface of the substrate, and according to the actual situation The use requirements of the plug holes are to control the depth of the plug holes covered by the green oil. The depth of the plug holes is controlled to be 70-90% or 80-100%. When the depth of the plug holes is 70-90%, after surface treatment, the plug holes are An aluminum sheet is placed inside the hole, and the aluminum sheet is placed so that the green oil does not cover the inside of the plug hole. When the depth of the plug hole is 80-100%, the inside of the plug hole is fully covered with green oil. The invention reduces the process of plugging holes twice, improves the production efficiency, thereby reduces the operation cost, does not affect the test, and reduces the risk of storing medicinal water during cleaning in the subsequent process.

Description

technical field [0001] The invention relates to the technical field of PCB board manufacturing process, in particular to a three-in-one green oil plug hole process. Background technique [0002] The Chinese name of PCB board is printed circuit board, also known as printed circuit board. It is an important electronic component, a support body for electronic components, and a carrier for electrical connection of electronic components. Because it is made by electronic printing, it is called a printed circuit board. [0003] In the production process of the PCB board, the green oil plugging process needs to be carried out on the substrate. The existing technology is usually divided into two plugging holes, that is, a plugging hole is made before the green oil, and after the surface treatment is completed, the green oil is returned to the green oil. Making a green oil plug hole has a long production process and low efficiency, and the depth of the secondary plug hole is generall...

AI Technical Summary

Problems solved by technology

[0003] In the process of PCB board production, it is necessary to carry out the green oil plugging process on the substrate. The existing technology is usually divided into two plug holes, that is, to make a plug hole before the green oil, and return to the green oil after finishing the surface treatment. To make a plug hole with green oil, the production process is long and the efficiency is low, and the depth of the second plug hole is generally controlled at 5-50%. When cleaning in the subsequent process, it is easy to stay in the hole, which will greatly affect the quality of PCB board production.

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